[thirdparty/mdadm.git] / Detail.c

/*
 * mdadm - manage Linux "md" devices aka RAID arrays.
 *
 * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
 *
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *    Author: Neil Brown
 *    Email: <neilb@suse.de>
 */

#include	"mdadm.h"
#include	"md_p.h"
#include	"md_u.h"
#include	<dirent.h>

int Detail(char *dev, int brief, int export, int test, char *homehost)
{
	/*
	 * Print out details for an md array by using
	 * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
	 */

	int fd = open(dev, O_RDONLY);
	int vers;
	mdu_array_info_t array;
	mdu_disk_info_t *disks;
	int next;
	int d;
	time_t atime;
	char *c;
	char *devices = NULL;
	int spares = 0;
	struct stat stb;
	int is_26 = get_linux_version() >= 2006000;
	int is_rebuilding = 0;
	int failed = 0;
	struct supertype *st;
	char *subarray = NULL;
	int max_disks = MD_SB_DISKS; /* just a default */
	struct mdinfo info;
	struct mdinfo *sra;
	char *member = NULL;
	char *container = NULL;

	int rv = test ? 4 : 1;
	int avail_disks = 0;
	char *avail;

	if (fd < 0) {
		fprintf(stderr, Name ": cannot open %s: %s\n",
			dev, strerror(errno));
		return rv;
	}
	vers = md_get_version(fd);
	if (vers < 0) {
		fprintf(stderr, Name ": %s does not appear to be an md device\n",
			dev);
		close(fd);
		return rv;
	}
	if (vers < 9000) {
		fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
			dev);
		close(fd);
		return rv;
	}
	if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
		if (errno == ENODEV)
			fprintf(stderr, Name ": md device %s does not appear to be active.\n",
				dev);
		else
			fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
				dev, strerror(errno));
		close(fd);
		return rv;
	}
	sra = sysfs_read(fd, 0, GET_VERSION);
	st = super_by_fd(fd, &subarray);

	if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
		stb.st_rdev = 0;
	rv = 0;

	if (st)
		max_disks = st->max_devs;

	if (sra && is_subarray(sra->text_version) &&
		strchr(sra->text_version+1, '/')) {
		/* This is a subarray of some container.
		 * We want the name of the container, and the member
		 */
		char *s = strchr(sra->text_version+1, '/');
		int dn;
		*s++ = '\0';
		member = s;
		dn = devname2devnum(sra->text_version+1);
		container = map_dev(dev2major(dn), dev2minor(dn), 1);
	}

	/* try to load a superblock */
	if (st) for (d = 0; d < max_disks; d++) {
		mdu_disk_info_t disk;
		char *dv;
		int fd2;
		int err;
		disk.number = d;
		if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
			continue;
		if (d >= array.raid_disks &&
		    disk.major == 0 &&
		    disk.minor == 0)
			continue;

		if (array.raid_disks > 0 &&
		    (disk.state & (1 << MD_DISK_ACTIVE)) == 0)
			continue;

		dv = map_dev(disk.major, disk.minor, 1);
		if (!dv)
			continue;

		fd2 = dev_open(dv, O_RDONLY);
		if (fd2 < 0)
			continue;

		if (st->sb)
			st->ss->free_super(st);

		if (subarray)
			strcpy(st->subarray, subarray);
		err = st->ss->load_super(st, fd2, NULL);
		close(fd2);
		if (err)
			continue;
		st->ss->getinfo_super(st, &info, NULL);

		if (array.raid_disks != 0 && /* container */
		    (info.array.ctime != array.ctime ||
		     info.array.level != array.level)) {
			st->ss->free_super(st);
			continue;
		}
		/* some formats (imsm) have free-floating-spares
		 * with a uuid of uuid_match_any, they don't
		 * have very good info about the rest of the
		 * container, so keep searching when
		 * encountering such a device.  Otherwise, stop
		 * after the first successful call to
		 * ->load_super.
		 */
		if (memcmp(uuid_match_any,
			   info.uuid,
			   sizeof(uuid_match_any)) == 0) {
			st->ss->free_super(st);
			continue;
		}
		break;
	}

	/* Ok, we have some info to print... */
	c = map_num(pers, array.level);

	if (export) {
		if (array.raid_disks) {
			if (c)
				printf("MD_LEVEL=%s\n", c);
			printf("MD_DEVICES=%d\n", array.raid_disks);
		} else {
			printf("MD_LEVEL=container\n");
			printf("MD_DEVICES=%d\n", array.nr_disks);
		}
		if (container) {
			printf("MD_CONTAINER=%s\n", container);
			printf("MD_MEMBER=%s\n", member);
		} else {
			if (sra && sra->array.major_version < 0)
				printf("MD_METADATA=%s\n", sra->text_version);
			else
				printf("MD_METADATA=%d.%d\n",
				       array.major_version, array.minor_version);
		}
		
		if (st && st->sb) {
			char nbuf[64];
			struct map_ent *mp, *map = NULL;

			fname_from_uuid(st, &info, nbuf, ':');
			printf("MD_UUID=%s\n", nbuf+5);
			mp = map_by_uuid(&map, info.uuid);
			if (mp && mp->path &&
			    strncmp(mp->path, "/dev/md/", 8) == 0)
				printf("MD_DEVNAME=%s\n", mp->path+8);

			if (st->ss->export_detail_super)
				st->ss->export_detail_super(st);
		} else {
			struct map_ent *mp, *map = NULL;
			char nbuf[64];
			mp = map_by_devnum(&map, fd2devnum(fd));
			if (mp) {
				__fname_from_uuid(mp->uuid, 0, nbuf, ':');
				printf("MD_UUID=%s\n", nbuf+5);
			}
			if (mp && mp->path &&
			    strncmp(mp->path, "/dev/md/", 8) == 0)
				printf("MD_DEVNAME=%s\n", mp->path+8);
		}
		goto out;
	}

	disks = malloc(max_disks * sizeof(mdu_disk_info_t));
	for (d=0; d<max_disks; d++) {
		disks[d].state = (1<<MD_DISK_REMOVED);
		disks[d].major = disks[d].minor = 0;
		disks[d].number = disks[d].raid_disk = d;
	}

	next = array.raid_disks;
	for (d=0; d < max_disks; d++) {
		mdu_disk_info_t disk;
		disk.number = d;
		if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
			if (d < array.raid_disks)
				fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
					d, strerror(errno));
			continue;
		}
		if (disk.major == 0 && disk.minor == 0)
			continue;
		if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
			disks[disk.raid_disk] = disk;
		else if (next < max_disks)
			disks[next++] = disk;
	}

	avail = calloc(array.raid_disks, 1);

	for (d= 0; d < array.raid_disks; d++) {
		mdu_disk_info_t disk = disks[d];

		if ((disk.state & (1<<MD_DISK_SYNC))) {
			avail_disks ++;
			avail[d] = 1;
		}
	}

	if (brief) {
		mdu_bitmap_file_t bmf;
		printf("ARRAY %s", dev);
		if (brief > 1) {
			if (array.raid_disks)
				printf(" level=%s num-devices=%d",
				       c?c:"-unknown-",
				       array.raid_disks );
			else
				printf(" level=container num-devices=%d",
				       array.nr_disks);
		}
		if (container) {
			printf(" container=%s", container);
			printf(" member=%s", member);
		} else {
			if (sra && sra->array.major_version < 0)
				printf(" metadata=%s", sra->text_version);
			else
				printf(" metadata=%d.%d",
				       array.major_version, array.minor_version);
		}

		/* Only try GET_BITMAP_FILE for 0.90.01 and later */
		if (vers >= 9001 &&
		    ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
		    bmf.pathname[0]) {
			printf(" bitmap=%s", bmf.pathname);
		}
	} else {
		mdu_bitmap_file_t bmf;
		unsigned long long larray_size;
		struct mdstat_ent *ms = mdstat_read(0, 0);
		struct mdstat_ent *e;
		int devnum = array.md_minor;
		if (major(stb.st_rdev) == (unsigned)get_mdp_major())
			devnum = -1 - devnum;

		for (e=ms; e; e=e->next)
			if (e->devnum == devnum)
				break;
		if (!get_dev_size(fd, NULL, &larray_size))
			larray_size = 0;

		printf("%s:\n", dev);

		if (container)
			printf("      Container : %s, member %s\n", container, member);
		else {
		if (sra && sra->array.major_version < 0)
			printf("        Version : %s\n", sra->text_version);
		else
			printf("        Version : %d.%d\n",
			       array.major_version, array.minor_version);
		}

		atime = array.ctime;
		if (atime)
			printf("  Creation Time : %.24s\n", ctime(&atime));
		if (array.raid_disks == 0) c = "container";
		printf("     Raid Level : %s\n", c?c:"-unknown-");
		if (larray_size)
			printf("     Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
		if (array.level >= 1) {
			if (array.major_version != 0 &&
			    (larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
				unsigned long long dsize = get_component_size(fd);
				if (dsize > 0)
					printf("  Used Dev Size : %llu%s\n",
					       dsize/2,
					 human_size((long long)dsize<<9));
				else
					printf("  Used Dev Size : unknown\n");
			} else
				printf("  Used Dev Size : %d%s\n", array.size,
				       human_size((long long)array.size<<10));
		}
		if (array.raid_disks)
			printf("   Raid Devices : %d\n", array.raid_disks);
		printf("  Total Devices : %d\n", array.nr_disks);
		if (!container && 
		    ((sra == NULL && array.major_version == 0) ||
		     (sra && sra->array.major_version == 0)))
			printf("Preferred Minor : %d\n", array.md_minor);
		if (sra == NULL || sra->array.major_version >= 0)
			printf("    Persistence : Superblock is %spersistent\n",
			       array.not_persistent?"not ":"");
		printf("\n");
		/* Only try GET_BITMAP_FILE for 0.90.01 and later */
		if (vers >= 9001 &&
		    ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
		    bmf.pathname[0]) {
			printf("  Intent Bitmap : %s\n", bmf.pathname);
			printf("\n");
		} else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
			printf("  Intent Bitmap : Internal\n\n");
		atime = array.utime;
		if (atime)
			printf("    Update Time : %.24s\n", ctime(&atime));
		if (array.raid_disks) {
			static char *sync_action[] = {", recovering",", resyncing",", reshaping",", checking"};
			char *st;
			if (avail_disks == array.raid_disks)
				st = "";
			else if (!enough(array.level, array.raid_disks,
					 array.layout, 1, avail, avail_disks))
				st = ", FAILED";
			else
				st = ", degraded";

			printf("          State : %s%s%s%s\n",
			       (array.state&(1<<MD_SB_CLEAN))?"clean":"active",
			       st,
			       (!e || e->percent < 0) ? "" : sync_action[e->resync],
			       larray_size ? "": ", Not Started");
		}
		if (array.raid_disks)
			printf(" Active Devices : %d\n", array.active_disks);
		printf("Working Devices : %d\n", array.working_disks);
		if (array.raid_disks) {
			printf(" Failed Devices : %d\n", array.failed_disks);
			printf("  Spare Devices : %d\n", array.spare_disks);
		}
		printf("\n");
		if (array.level == 5) {
			c = map_num(r5layout, array.layout);
			printf("         Layout : %s\n", c?c:"-unknown-");
		}
		if (array.level == 6) {
			c = map_num(r6layout, array.layout);
			printf("         Layout : %s\n", c?c:"-unknown-");
		}
		if (array.level == 10) {
			printf("         Layout :");
			print_r10_layout(array.layout);
			printf("\n");
		}
		switch (array.level) {
		case 0:
		case 4:
		case 5:
		case 10:
		case 6:
			if (array.chunk_size)
				printf("     Chunk Size : %dK\n\n",
				       array.chunk_size/1024);
			break;
		case -1:
			printf("       Rounding : %dK\n\n", array.chunk_size/1024);
			break;
		default: break;
		}

		if (e && e->percent >= 0) {
			printf(" Re%s Status : %d%% complete\n",
			       (st && st->sb && info.reshape_active)?
			          "shape":"build",
			       e->percent);
			is_rebuilding = 1;
		}
		free_mdstat(ms);

		if (st->sb && info.reshape_active) {
#if 0
This is pretty boring
			printf("  Reshape pos'n : %llu%s\n", (unsigned long long) info.reshape_progress<<9,
			       human_size((unsigned long long)info.reshape_progress<<9));
#endif
			if (info.delta_disks > 0)
				printf("  Delta Devices : %d, (%d->%d)\n",
				       info.delta_disks, array.raid_disks - info.delta_disks, array.raid_disks);
			if (info.delta_disks < 0)
				printf("  Delta Devices : %d, (%d->%d)\n",
				       info.delta_disks, array.raid_disks, array.raid_disks + info.delta_disks);
			if (info.new_level != array.level) {
				char *c = map_num(pers, info.new_level);
				printf("      New Level : %s\n", c?c:"-unknown-");
			}
			if (info.new_level != array.level ||
			    info.new_layout != array.layout) {
				if (info.new_level == 5) {
					char *c = map_num(r5layout, info.new_layout);
					printf("     New Layout : %s\n",
					       c?c:"-unknown-");
				}
				if (info.new_level == 6) {
					char *c = map_num(r6layout, info.new_layout);
					printf("     New Layout : %s\n",
					       c?c:"-unknown-");
				}
				if (info.new_level == 10) {
					printf("     New Layout : near=%d, %s=%d\n",
					       info.new_layout&255,
					       (info.new_layout&0x10000)?"offset":"far",
					       (info.new_layout>>8)&255);
				}
			}
			if (info.new_chunk != array.chunk_size)
				printf("  New Chunksize : %dK\n", info.new_chunk/1024);
			printf("\n");
		} else if (e && e->percent >= 0)
			printf("\n");
		if (st && st->sb)
			st->ss->detail_super(st, homehost);

		if (array.raid_disks == 0 && sra && sra->array.major_version == -1
		    && sra->array.minor_version == -2 && sra->text_version[0] != '/') {
			/* This looks like a container.  Find any active arrays
			 * That claim to be a member.
			 */
			DIR *dir = opendir("/sys/block");
			struct dirent *de;

			printf("  Member Arrays :");

			while (dir && (de = readdir(dir)) != NULL) {
				char path[200];
				char vbuf[1024];
				int nlen = strlen(sra->sys_name);
				int dn;
				if (de->d_name[0] == '.')
					continue;
				sprintf(path, "/sys/block/%s/md/metadata_version",
					de->d_name);
				if (load_sys(path, vbuf) < 0)
					continue;
				if (strncmp(vbuf, "external:", 9) != 0 ||
				    !is_subarray(sra->sys_name+9) ||
				    strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
				    vbuf[10+nlen] != '/')
					continue;
				dn = devname2devnum(de->d_name);
				printf(" %s", map_dev(dev2major(dn),
						      dev2minor(dn), 1));
			}
			if (dir)
				closedir(dir);
			printf("\n\n");
		}

		if (array.raid_disks)
			printf("    Number   Major   Minor   RaidDevice State\n");
		else
			printf("    Number   Major   Minor   RaidDevice\n");
	}

	for (d= 0; d < max_disks; d++) {
		char *dv;
		mdu_disk_info_t disk = disks[d];

		if (d >= array.raid_disks &&
		    disk.major == 0 &&
		    disk.minor == 0)
			continue;
		if (!brief) {
			if (d == array.raid_disks) printf("\n");
			if (disk.raid_disk < 0)
				printf("   %5d   %5d    %5d        -     ",
				       disk.number, disk.major, disk.minor);
			else
				printf("   %5d   %5d    %5d    %5d     ",
				       disk.number, disk.major, disk.minor, disk.raid_disk);
		}
		if (!brief && array.raid_disks) {

			if (disk.state & (1<<MD_DISK_FAULTY)) {
				printf(" faulty");
				if (disk.raid_disk < array.raid_disks &&
				    disk.raid_disk >= 0)
					failed++;
			}
			if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
			if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
			if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
			if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
			if ((disk.state &
			     ((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED)))
			    == 0) {
				printf(" spare");
				if (is_26) {
					if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
						printf(" rebuilding");
				} else if (is_rebuilding && failed) {
					/* Taking a bit of a risk here, we remove the
					 * device from the array, and then put it back.
					 * If this fails, we are rebuilding
					 */
					int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
					if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
					if (err && errno ==  EBUSY)
						printf(" rebuilding");
				}
			}
		}
		if (disk.state == 0) spares++;
		if (test && d < array.raid_disks
		    && !(disk.state & (1<<MD_DISK_SYNC)))
			rv |= 1;
		if ((dv=map_dev(disk.major, disk.minor, 0))) {
			if (brief) {
				if (devices) {
					devices = realloc(devices,
							  strlen(devices)+1+strlen(dv)+1);
					strcat(strcat(devices,","),dv);
				} else
					devices = strdup(dv);
			} else
				printf("   %s", dv);
		}
		if (!brief) printf("\n");
	}
	if (spares && brief && array.raid_disks) printf(" spares=%d", spares);
	if (brief && st && st->sb)
		st->ss->brief_detail_super(st);
	st->ss->free_super(st);

	if (brief > 1 && devices) printf("\n   devices=%s", devices);
	if (brief) printf("\n");
	if (test &&
	    !enough(array.level, array.raid_disks, array.layout,
		    1, avail, avail_disks))
		rv = 2;

	free(disks);
out:
	close(fd);
	free(subarray);
	return rv;
}

int Detail_Platform(struct superswitch *ss, int scan, int verbose)
{
	/* display platform capabilities for the given metadata format
	 * 'scan' in this context means iterate over all metadata types
	 */
	int i;
	int err = 1;

	if (ss && ss->detail_platform)
		err = ss->detail_platform(verbose, 0);
	else if (ss) {
		if (verbose)
			fprintf(stderr, Name ": %s metadata is platform independent\n",
				ss->name ? : "[no name]");
	} else if (!scan) {
		if (verbose)
			fprintf(stderr, Name ": specify a metadata type or --scan\n");
	}

	if (!scan)
		return err;

	for (i = 0; superlist[i]; i++) {
		struct superswitch *meta = superlist[i];

		if (meta == ss)
			continue;
		if (verbose)
			fprintf(stderr, Name ": checking metadata %s\n",
				meta->name ? : "[no name]");
		if (!meta->detail_platform) {
			if (verbose)
				fprintf(stderr, Name ": %s metadata is platform independent\n",
					meta->name ? : "[no name]");
		} else
			err |= meta->detail_platform(verbose, 0);
	}

	return err;
}
Commit	Line	Data
64c4757e	1	/*
9a9dab36	2	* mdadm - manage Linux "md" devices aka RAID arrays.
64c4757e	3	*
e736b623	4	* Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
64c4757e NB	5	*
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	* Author: Neil Brown
e736b623	22	* Email: <neilb@suse.de>
64c4757e NB	23	*/
64c4757e NB	24
9a9dab36	25	#include "mdadm.h"
64c4757e NB	26	#include "md_p.h"
64c4757e NB	27	#include "md_u.h"
c69b251b	28	#include <dirent.h>
64c4757e	29
54bad364	30	int Detail(char dev, int brief, int export, int test, char homehost)
64c4757e NB	31	{
	32	/*
	33	* Print out details for an md array by using
	34	* GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
	35	*/
	36
fb97b4d6	37	int fd = open(dev, O_RDONLY);
64c4757e NB	38	int vers;
64c4757e NB	39	mdu_array_info_t array;
b0c63f32 NB	40	mdu_disk_info_t *disks;
b0c63f32 NB	41	int next;
64c4757e NB	42	int d;
64c4757e NB	43	time_t atime;
682c7051	44	char *c;
d013a55e	45	char *devices = NULL;
feb716e9	46	int spares = 0;
dd0781e5	47	struct stat stb;
e5329c37 NB	48	int is_26 = get_linux_version() >= 2006000;
	49	int is_rebuilding = 0;
	50	int failed = 0;
9aaada05	51	struct supertype *st;
4725bc31	52	char *subarray = NULL;
e27d562b	53	int max_disks = MD_SB_DISKS; /* just a default */
bed256c2	54	struct mdinfo info;
142cb9e1	55	struct mdinfo *sra;
c69b251b N	56	char *member = NULL;
c69b251b N	57	char *container = NULL;
64c4757e	58
feb716e9	59	int rv = test ? 4 : 1;
a77be586 NB	60	int avail_disks = 0;
a77be586 NB	61	char *avail;
82b27616	62
64c4757e	63	if (fd < 0) {
682c7051	64	fprintf(stderr, Name ": cannot open %s: %s\n",
64c4757e	65	dev, strerror(errno));
feb716e9	66	return rv;
64c4757e NB	67	}
	68	vers = md_get_version(fd);
	69	if (vers < 0) {
682c7051	70	fprintf(stderr, Name ": %s does not appear to be an md device\n",
64c4757e NB	71	dev);
64c4757e NB	72	close(fd);
feb716e9	73	return rv;
64c4757e	74	}
682c7051 NB	75	if (vers < 9000) {
682c7051 NB	76	fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
64c4757e NB	77	dev);
64c4757e NB	78	close(fd);
feb716e9	79	return rv;
64c4757e NB	80	}
	81	if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
	82	if (errno == ENODEV)
682c7051	83	fprintf(stderr, Name ": md device %s does not appear to be active.\n",
64c4757e NB	84	dev);
64c4757e NB	85	else
682c7051	86	fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
64c4757e NB	87	dev, strerror(errno));
64c4757e NB	88	close(fd);
feb716e9	89	return rv;
64c4757e	90	}
142cb9e1	91	sra = sysfs_read(fd, 0, GET_VERSION);
4725bc31	92	st = super_by_fd(fd, &subarray);
f9ce90ba	93
dd0781e5 NB	94	if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
dd0781e5 NB	95	stb.st_rdev = 0;
feb716e9	96	rv = 0;
e5329c37	97
c69b251b N	98	if (st)
	99	max_disks = st->max_devs;
	100
	101	if (sra && is_subarray(sra->text_version) &&
	102	strchr(sra->text_version+1, '/')) {
	103	/* This is a subarray of some container.
	104	* We want the name of the container, and the member
	105	*/
	106	char *s = strchr(sra->text_version+1, '/');
	107	int dn;
	108	*s++ = '\0';
	109	member = s;
	110	dn = devname2devnum(sra->text_version+1);
	111	container = map_dev(dev2major(dn), dev2minor(dn), 1);
	112	}
ea329559	113
e5329c37	114	/* try to load a superblock */
9aaada05	115	if (st) for (d = 0; d < max_disks; d++) {
e5329c37 NB	116	mdu_disk_info_t disk;
e5329c37 NB	117	char *dv;
9aaada05 N	118	int fd2;
9aaada05 N	119	int err;
e5329c37 NB	120	disk.number = d;
	121	if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
	122	continue;
	123	if (d >= array.raid_disks &&
	124	disk.major == 0 &&
	125	disk.minor == 0)
	126	continue;
9aaada05 N	127
	128	if (array.raid_disks > 0 &&
	129	(disk.state & (1 << MD_DISK_ACTIVE)) == 0)
	130	continue;
	131
	132	dv = map_dev(disk.major, disk.minor, 1);
	133	if (!dv)
	134	continue;
	135
	136	fd2 = dev_open(dv, O_RDONLY);
	137	if (fd2 < 0)
	138	continue;
	139
	140	if (st->sb)
	141	st->ss->free_super(st);
	142
4725bc31 N	143	if (subarray)
4725bc31 N	144	strcpy(st->subarray, subarray);
9aaada05 N	145	err = st->ss->load_super(st, fd2, NULL);
	146	close(fd2);
	147	if (err)
	148	continue;
a5d85af7	149	st->ss->getinfo_super(st, &info, NULL);
9aaada05 N	150
	151	if (array.raid_disks != 0 && /* container */
	152	(info.array.ctime != array.ctime \|\|
	153	info.array.level != array.level)) {
	154	st->ss->free_super(st);
	155	continue;
e5329c37	156	}
9aaada05 N	157	/* some formats (imsm) have free-floating-spares
	158	* with a uuid of uuid_match_any, they don't
	159	* have very good info about the rest of the
	160	* container, so keep searching when
	161	* encountering such a device. Otherwise, stop
	162	* after the first successful call to
	163	* ->load_super.
	164	*/
	165	if (memcmp(uuid_match_any,
	166	info.uuid,
	167	sizeof(uuid_match_any)) == 0) {
	168	st->ss->free_super(st);
	169	continue;
	170	}
	171	break;
e5329c37 NB	172	}
e5329c37 NB	173
64c4757e	174	/* Ok, we have some info to print... */
682c7051	175	c = map_num(pers, array.level);
54bad364 KS	176
54bad364 KS	177	if (export) {
c69b251b N	178	if (array.raid_disks) {
	179	if (c)
	180	printf("MD_LEVEL=%s\n", c);
	181	printf("MD_DEVICES=%d\n", array.raid_disks);
	182	} else {
	183	printf("MD_LEVEL=container\n");
	184	printf("MD_DEVICES=%d\n", array.nr_disks);
	185	}
	186	if (container) {
	187	printf("MD_CONTAINER=%s\n", container);
	188	printf("MD_MEMBER=%s\n", member);
	189	} else {
	190	if (sra && sra->array.major_version < 0)
	191	printf("MD_METADATA=%s\n", sra->text_version);
	192	else
6e48d593	193	printf("MD_METADATA=%d.%d\n",
c69b251b N	194	array.major_version, array.minor_version);
c69b251b N	195	}
35ddc76d N	196
35ddc76d N	197	if (st && st->sb) {
35ddc76d	198	char nbuf[64];
f069dd29	199	struct map_ent mp, map = NULL;
9aaada05	200
35ddc76d N	201	fname_from_uuid(st, &info, nbuf, ':');
35ddc76d N	202	printf("MD_UUID=%s\n", nbuf+5);
f069dd29 N	203	mp = map_by_uuid(&map, info.uuid);
	204	if (mp && mp->path &&
	205	strncmp(mp->path, "/dev/md/", 8) == 0)
	206	printf("MD_DEVNAME=%s\n", mp->path+8);
142cb9e1	207
35ddc76d N	208	if (st->ss->export_detail_super)
35ddc76d N	209	st->ss->export_detail_super(st);
7e6c6cb2 N	210	} else {
7e6c6cb2 N	211	struct map_ent mp, map = NULL;
aae5a112	212	char nbuf[64];
7e6c6cb2	213	mp = map_by_devnum(&map, fd2devnum(fd));
aae5a112 DW	214	if (mp) {
	215	__fname_from_uuid(mp->uuid, 0, nbuf, ':');
	216	printf("MD_UUID=%s\n", nbuf+5);
	217	}
7e6c6cb2 N	218	if (mp && mp->path &&
	219	strncmp(mp->path, "/dev/md/", 8) == 0)
	220	printf("MD_DEVNAME=%s\n", mp->path+8);
35ddc76d	221	}
54bad364 KS	222	goto out;
	223	}
	224
d998adc3 N	225	disks = malloc(max_disks * sizeof(mdu_disk_info_t));
	226	for (d=0; d<max_disks; d++) {
	227	disks[d].state = (1<<MD_DISK_REMOVED);
	228	disks[d].major = disks[d].minor = 0;
	229	disks[d].number = disks[d].raid_disk = d;
	230	}
	231
	232	next = array.raid_disks;
	233	for (d=0; d < max_disks; d++) {
	234	mdu_disk_info_t disk;
	235	disk.number = d;
	236	if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
	237	if (d < array.raid_disks)
	238	fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
	239	d, strerror(errno));
	240	continue;
	241	}
	242	if (disk.major == 0 && disk.minor == 0)
	243	continue;
	244	if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
	245	disks[disk.raid_disk] = disk;
	246	else if (next < max_disks)
	247	disks[next++] = disk;
	248	}
	249
	250	avail = calloc(array.raid_disks, 1);
	251
	252	for (d= 0; d < array.raid_disks; d++) {
	253	mdu_disk_info_t disk = disks[d];
	254
	255	if ((disk.state & (1<<MD_DISK_SYNC))) {
	256	avail_disks ++;
	257	avail[d] = 1;
	258	}
	259	}
	260
142cb9e1	261	if (brief) {
e8eb8763	262	mdu_bitmap_file_t bmf;
061f2c6a N	263	printf("ARRAY %s", dev);
	264	if (brief > 1) {
	265	if (array.raid_disks)
0e90271e	266	printf(" level=%s num-devices=%d",
061f2c6a N	267	c?c:"-unknown-",
	268	array.raid_disks );
	269	else
0e90271e	270	printf(" level=container num-devices=%d",
061f2c6a N	271	array.nr_disks);
061f2c6a N	272	}
c69b251b N	273	if (container) {
	274	printf(" container=%s", container);
	275	printf(" member=%s", member);
	276	} else {
	277	if (sra && sra->array.major_version < 0)
	278	printf(" metadata=%s", sra->text_version);
	279	else
6e48d593	280	printf(" metadata=%d.%d",
c69b251b N	281	array.major_version, array.minor_version);
c69b251b N	282	}
e8eb8763 NB	283
	284	/* Only try GET_BITMAP_FILE for 0.90.01 and later */
	285	if (vers >= 9001 &&
	286	ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
	287	bmf.pathname[0]) {
	288	printf(" bitmap=%s", bmf.pathname);
	289	}
142cb9e1	290	} else {
8fac0577	291	mdu_bitmap_file_t bmf;
e0d19036	292	unsigned long long larray_size;
22a88995	293	struct mdstat_ent *ms = mdstat_read(0, 0);
dd0781e5 NB	294	struct mdstat_ent *e;
dd0781e5 NB	295	int devnum = array.md_minor;
f21e18ca	296	if (major(stb.st_rdev) == (unsigned)get_mdp_major())
dd0781e5 NB	297	devnum = -1 - devnum;
	298
	299	for (e=ms; e; e=e->next)
	300	if (e->devnum == devnum)
	301	break;
beae1dfe NB	302	if (!get_dev_size(fd, NULL, &larray_size))
beae1dfe NB	303	larray_size = 0;
56eb10c0	304
cd29a5c8	305	printf("%s:\n", dev);
142cb9e1	306
c69b251b N	307	if (container)
	308	printf(" Container : %s, member %s\n", container, member);
	309	else {
142cb9e1 NB	310	if (sra && sra->array.major_version < 0)
	311	printf(" Version : %s\n", sra->text_version);
	312	else
6e48d593	313	printf(" Version : %d.%d\n",
142cb9e1	314	array.major_version, array.minor_version);
c69b251b	315	}
142cb9e1	316
cd29a5c8	317	atime = array.ctime;
c69b251b N	318	if (atime)
c69b251b N	319	printf(" Creation Time : %.24s\n", ctime(&atime));
142cb9e1	320	if (array.raid_disks == 0) c = "container";
cd29a5c8	321	printf(" Raid Level : %s\n", c?c:"-unknown-");
56eb10c0	322	if (larray_size)
dd0781e5	323	printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
3d4064cc NB	324	if (array.level >= 1) {
3d4064cc NB	325	if (array.major_version != 0 &&
6ee5c05a NB	326	(larray_size >= 0xFFFFFFFFULL\|\| array.size == 0)) {
	327	unsigned long long dsize = get_component_size(fd);
	328	if (dsize > 0)
e3362544	329	printf(" Used Dev Size : %llu%s\n",
a1236192 N	330	dsize/2,
a1236192 N	331	human_size((long long)dsize<<9));
6ee5c05a	332	else
e3362544	333	printf(" Used Dev Size : unknown\n");
6ee5c05a	334	} else
e3362544 NB	335	printf(" Used Dev Size : %d%s\n", array.size,
e3362544 NB	336	human_size((long long)array.size<<10));
3d4064cc	337	}
c69b251b N	338	if (array.raid_disks)
c69b251b N	339	printf(" Raid Devices : %d\n", array.raid_disks);
b83d95f3	340	printf(" Total Devices : %d\n", array.nr_disks);
c69b251b N	341	if (!container &&
	342	((sra == NULL && array.major_version == 0) \|\|
	343	(sra && sra->array.major_version == 0)))
	344	printf("Preferred Minor : %d\n", array.md_minor);
142cb9e1 NB	345	if (sra == NULL \|\| sra->array.major_version >= 0)
	346	printf(" Persistence : Superblock is %spersistent\n",
	347	array.not_persistent?"not ":"");
cd29a5c8	348	printf("\n");
4027ddca NB	349	/* Only try GET_BITMAP_FILE for 0.90.01 and later */
	350	if (vers >= 9001 &&
	351	ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
	352	bmf.pathname[0]) {
8fac0577 NB	353	printf(" Intent Bitmap : %s\n", bmf.pathname);
	354	printf("\n");
	355	} else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
	356	printf(" Intent Bitmap : Internal\n\n");
cd29a5c8	357	atime = array.utime;
c69b251b N	358	if (atime)
c69b251b N	359	printf(" Update Time : %.24s\n", ctime(&atime));
d998adc3	360	if (array.raid_disks) {
f94c116f	361	static char *sync_action[] = {", recovering",", resyncing",", reshaping",", checking"};
d998adc3 N	362	char *st;
	363	if (avail_disks == array.raid_disks)
	364	st = "";
	365	else if (!enough(array.level, array.raid_disks,
	366	array.layout, 1, avail, avail_disks))
	367	st = ", FAILED";
	368	else
	369	st = ", degraded";
	370
c69b251b N	371	printf(" State : %s%s%s%s\n",
c69b251b N	372	(array.state&(1<<MD_SB_CLEAN))?"clean":"active",
d998adc3	373	st,
f94c116f	374	(!e \|\| e->percent < 0) ? "" : sync_action[e->resync],
c69b251b	375	larray_size ? "": ", Not Started");
d998adc3	376	}
c69b251b N	377	if (array.raid_disks)
c69b251b N	378	printf(" Active Devices : %d\n", array.active_disks);
b83d95f3	379	printf("Working Devices : %d\n", array.working_disks);
c69b251b N	380	if (array.raid_disks) {
	381	printf(" Failed Devices : %d\n", array.failed_disks);
	382	printf(" Spare Devices : %d\n", array.spare_disks);
	383	}
cd29a5c8 NB	384	printf("\n");
	385	if (array.level == 5) {
	386	c = map_num(r5layout, array.layout);
	387	printf(" Layout : %s\n", c?c:"-unknown-");
	388	}
fe77a154 N	389	if (array.level == 6) {
	390	c = map_num(r6layout, array.layout);
	391	printf(" Layout : %s\n", c?c:"-unknown-");
	392	}
e5329c37	393	if (array.level == 10) {
e4965ef8 N	394	printf(" Layout :");
	395	print_r10_layout(array.layout);
	396	printf("\n");
e5329c37	397	}
cd29a5c8 NB	398	switch (array.level) {
	399	case 0:
	400	case 4:
	401	case 5:
e5329c37 NB	402	case 10:
e5329c37 NB	403	case 6:
142cb9e1 NB	404	if (array.chunk_size)
	405	printf(" Chunk Size : %dK\n\n",
	406	array.chunk_size/1024);
cd29a5c8 NB	407	break;
cd29a5c8 NB	408	case -1:
e5329c37	409	printf(" Rounding : %dK\n\n", array.chunk_size/1024);
cd29a5c8 NB	410	break;
	411	default: break;
	412	}
aba69144	413
e5329c37	414	if (e && e->percent >= 0) {
bed256c2	415	printf(" Re%s Status : %d%% complete\n",
3da92f27 NB	416	(st && st->sb && info.reshape_active)?
3da92f27 NB	417	"shape":"build",
bed256c2	418	e->percent);
e5329c37 NB	419	is_rebuilding = 1;
e5329c37 NB	420	}
dd0781e5 NB	421	free_mdstat(ms);
dd0781e5 NB	422
3da92f27	423	if (st->sb && info.reshape_active) {
bed256c2 NB	424	#if 0
	425	This is pretty boring
	426	printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info.reshape_progress<<9,
3e416561	427	human_size((unsigned long long)info.reshape_progress<<9));
bed256c2 NB	428	#endif
	429	if (info.delta_disks > 0)
	430	printf(" Delta Devices : %d, (%d->%d)\n",
	431	info.delta_disks, array.raid_disks - info.delta_disks, array.raid_disks);
	432	if (info.delta_disks < 0)
	433	printf(" Delta Devices : %d, (%d->%d)\n",
	434	info.delta_disks, array.raid_disks, array.raid_disks + info.delta_disks);
	435	if (info.new_level != array.level) {
	436	char *c = map_num(pers, info.new_level);
	437	printf(" New Level : %s\n", c?c:"-unknown-");
	438	}
	439	if (info.new_level != array.level \|\|
	440	info.new_layout != array.layout) {
	441	if (info.new_level == 5) {
	442	char *c = map_num(r5layout, info.new_layout);
	443	printf(" New Layout : %s\n",
	444	c?c:"-unknown-");
	445	}
dab54dcb N	446	if (info.new_level == 6) {
	447	char *c = map_num(r6layout, info.new_layout);
	448	printf(" New Layout : %s\n",
	449	c?c:"-unknown-");
	450	}
bed256c2	451	if (info.new_level == 10) {
b578481c	452	printf(" New Layout : near=%d, %s=%d\n",
bed256c2	453	info.new_layout&255,
b578481c	454	(info.new_layout&0x10000)?"offset":"far",
bed256c2 NB	455	(info.new_layout>>8)&255);
	456	}
	457	}
	458	if (info.new_chunk != array.chunk_size)
	459	printf(" New Chunksize : %dK\n", info.new_chunk/1024);
	460	printf("\n");
	461	} else if (e && e->percent >= 0)
	462	printf("\n");
3da92f27 NB	463	if (st && st->sb)
3da92f27 NB	464	st->ss->detail_super(st, homehost);
e5329c37	465
c69b251b N	466	if (array.raid_disks == 0 && sra && sra->array.major_version == -1
	467	&& sra->array.minor_version == -2 && sra->text_version[0] != '/') {
	468	/* This looks like a container. Find any active arrays
	469	* That claim to be a member.
	470	*/
	471	DIR *dir = opendir("/sys/block");
	472	struct dirent *de;
	473
	474	printf(" Member Arrays :");
	475
	476	while (dir && (de = readdir(dir)) != NULL) {
	477	char path[200];
	478	char vbuf[1024];
	479	int nlen = strlen(sra->sys_name);
	480	int dn;
	481	if (de->d_name[0] == '.')
	482	continue;
	483	sprintf(path, "/sys/block/%s/md/metadata_version",
	484	de->d_name);
	485	if (load_sys(path, vbuf) < 0)
	486	continue;
	487	if (strncmp(vbuf, "external:", 9) != 0 \|\|
	488	!is_subarray(sra->sys_name+9) \|\|
	489	strncmp(vbuf+10, sra->sys_name, nlen) != 0 \|\|
	490	vbuf[10+nlen] != '/')
	491	continue;
	492	dn = devname2devnum(de->d_name);
	493	printf(" %s", map_dev(dev2major(dn),
	494	dev2minor(dn), 1));
	495	}
	496	if (dir)
	497	closedir(dir);
	498	printf("\n\n");
	499	}
	500
	501	if (array.raid_disks)
	502	printf(" Number Major Minor RaidDevice State\n");
	503	else
	504	printf(" Number Major Minor RaidDevice\n");
cd29a5c8	505	}
b0c63f32	506
b0c63f32 NB	507	for (d= 0; d < max_disks; d++) {
	508	char *dv;
	509	mdu_disk_info_t disk = disks[d];
	510
e0d19036 NB	511	if (d >= array.raid_disks &&
	512	disk.major == 0 &&
	513	disk.minor == 0)
	514	continue;
cd29a5c8	515	if (!brief) {
b0c63f32	516	if (d == array.raid_disks) printf("\n");
e5329c37	517	if (disk.raid_disk < 0)
aba69144	518	printf(" %5d %5d %5d - ",
e5329c37 NB	519	disk.number, disk.major, disk.minor);
e5329c37 NB	520	else
aba69144	521	printf(" %5d %5d %5d %5d ",
e5329c37	522	disk.number, disk.major, disk.minor, disk.raid_disk);
c69b251b N	523	}
	524	if (!brief && array.raid_disks) {
	525
aba69144 NB	526	if (disk.state & (1<<MD_DISK_FAULTY)) {
aba69144 NB	527	printf(" faulty");
e5329c37 NB	528	if (disk.raid_disk < array.raid_disks &&
	529	disk.raid_disk >= 0)
	530	failed++;
	531	}
cd29a5c8 NB	532	if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
	533	if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
	534	if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
b0c63f32 NB	535	if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
	536	if ((disk.state &
	537	((1<<MD_DISK_ACTIVE)\|(1<<MD_DISK_SYNC)\|(1<<MD_DISK_REMOVED)))
	538	== 0) {
	539	printf(" spare");
e5329c37 NB	540	if (is_26) {
	541	if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
	542	printf(" rebuilding");
	543	} else if (is_rebuilding && failed) {
	544	/* Taking a bit of a risk here, we remove the
	545	* device from the array, and then put it back.
	546	* If this fails, we are rebuilding
	547	*/
0df46c2a NB	548	int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
0df46c2a NB	549	if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
e5329c37 NB	550	if (err && errno == EBUSY)
	551	printf(" rebuilding");
	552	}
	553	}
feb716e9	554	}
e5329c37	555	if (disk.state == 0) spares++;
a77be586 NB	556	if (test && d < array.raid_disks
a77be586 NB	557	&& !(disk.state & (1<<MD_DISK_SYNC)))
feb716e9	558	rv \|= 1;
16c6fa80	559	if ((dv=map_dev(disk.major, disk.minor, 0))) {
d013a55e NB	560	if (brief) {
	561	if (devices) {
	562	devices = realloc(devices,
	563	strlen(devices)+1+strlen(dv)+1);
	564	strcat(strcat(devices,","),dv);
	565	} else
	566	devices = strdup(dv);
	567	} else
	568	printf(" %s", dv);
82b27616	569	}
cd29a5c8	570	if (!brief) printf("\n");
64c4757e	571	}
c69b251b	572	if (spares && brief && array.raid_disks) printf(" spares=%d", spares);
3da92f27 NB	573	if (brief && st && st->sb)
	574	st->ss->brief_detail_super(st);
	575	st->ss->free_super(st);
4b1ac34b	576
22892d56	577	if (brief > 1 && devices) printf("\n devices=%s", devices);
cd29a5c8	578	if (brief) printf("\n");
a77be586 NB	579	if (test &&
	580	!enough(array.level, array.raid_disks, array.layout,
	581	1, avail, avail_disks))
	582	rv = 2;
	583
0eb26465	584	free(disks);
a328c097	585	out:
e5329c37	586	close(fd);
4725bc31	587	free(subarray);
feb716e9	588	return rv;
64c4757e	589	}
4cce4069 DW	590
	591	int Detail_Platform(struct superswitch *ss, int scan, int verbose)
	592	{
	593	/* display platform capabilities for the given metadata format
	594	* 'scan' in this context means iterate over all metadata types
	595	*/
	596	int i;
	597	int err = 1;
	598
	599	if (ss && ss->detail_platform)
5615172f	600	err = ss->detail_platform(verbose, 0);
4cce4069 DW	601	else if (ss) {
	602	if (verbose)
	603	fprintf(stderr, Name ": %s metadata is platform independent\n",
	604	ss->name ? : "[no name]");
	605	} else if (!scan) {
	606	if (verbose)
	607	fprintf(stderr, Name ": specify a metadata type or --scan\n");
	608	}
	609
	610	if (!scan)
	611	return err;
	612
	613	for (i = 0; superlist[i]; i++) {
	614	struct superswitch *meta = superlist[i];
	615
	616	if (meta == ss)
	617	continue;
	618	if (verbose)
	619	fprintf(stderr, Name ": checking metadata %s\n",
	620	meta->name ? : "[no name]");
	621	if (!meta->detail_platform) {
	622	if (verbose)
	623	fprintf(stderr, Name ": %s metadata is platform independent\n",
	624	meta->name ? : "[no name]");
	625	} else
5615172f	626	err \|= meta->detail_platform(verbose, 0);
4cce4069 DW	627	}
	628
	629	return err;
	630	}